Dr Aissa Bouaissi, a co-founder of Una Developments and inventor of RGC, holds an MSc Cert in Chemical Engineering and a PhD in Civil Engineering (Materials). Aissa has extensive experience in OPC-free cement and concrete,  and eco-friendly materials. He applies his chemical engineering knowledge to chemical and physical processing of industrial by-products. Before Una Developments he worked as a senior process engineer in national and multinational companies in Algeria, where he built his expertise in well cementing services and the Oil and Gas industry.